2002/12/31 by B. V. Martemyanov, Amand Faessler, C. Fuchs +2 · 21 citations
Physics and Astronomy · #Bar (unit) #Chiral perturbation theory #High-Energy Particle Collisions Research #Meson #Nuclear matter #Nuclear physics #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Scattering #nucl-th
paper · pdf · doi:10.1103/physrevlett.93.052301
published in Physical Review Letters 93(5), 052301 (American Physical Society) · 5 pages, 2 figures, revised version accepted for publication in PRL
arxiv created 2004/06/08 · openalex publication_date 2004/07/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Kaon in-medium masses and mean-field potentials are calculated in isotopically symmetric pion matter to one loop of chiral perturbation theory. The results are extended to BNL RHIC temperatures using experimental data on piK scattering phase shifts. The kaon in-medium broadening results in an acceleration of the phi-->K(-)K decay. The increased apparent dilepton branching of the phi mesons, observed recently by the NA50, NA49, and PHENIX Collaborations at RHIC, is interpreted in terms of rescattering of secondary kaons inside the pion matter.